iphone – 在UISplitViewController中为横向模式中的一个视图控制器设置显示/隐藏主视图启用

此函数将通过动画调整其框架来隐藏/@L_548_1@masterViewController.
您还可以传递一个完成块,以便在动画完成时调用,因为调用控制器需要按顺序进行动画处理,以便它可以很好地进行布局.如果不需要,通过nil.请注意,使用autolayout时这也最有效.

#pragma mark - UISplitView Hide Master
/** Will hide/show masterViewController by adjusTing it's frame with an animation.
 * Can pass a completion block to be called when the animation is finished incase calling
 * controller needs to do animations in-order for view. Pass nil if not needed.
 @param completionBlock - accepts an optional completion block or nil arguement. The completion block is called when the hide/unhide animation is complete.
 @return void
 */
-(void)toggleHideMaster:(void(^)(void))completionBlock
{
    __weak MyAppDelegate  *delegate = self;
    __weak UISplitViewController *splitView = (UISplitViewController*)self.window.rootViewController;

    // Adjust the detailView frame to hide/show the masterview
    [UIView animateWithDuration:0.20f
                          delay:0.0f
                        options:UIViewAnimationOptionCurveEaseInOut
                     animations:^(void)
     {
         CGRect selfFrame = splitView.view.frame;

         // Get the width of the master view controller - so we kNow how far to animate.
         CGFloat deltaWidth = delegate.masterNavigationController.topViewController.view.frame.size.width;

         if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
         {
             if (!delegate.masterIsHidden)
             {
                selfFrame.size.width += deltaWidth;
                selfFrame.origin.x -= deltaWidth;
             }
             else
             {
                selfFrame.size.width -= deltaWidth;
                selfFrame.origin.x += deltaWidth;
             }
         }
         else
         {
             if(!delegate.masterIsHidden)
             {
                 selfFrame.size.height += deltaWidth;
                 if (splitView.interfaceOrientation == UIInterfaceOrientationLandscapeRight)
                 {
                     selfFrame.origin.y -= deltaWidth;
                 }
             }
             else
             {
                 selfFrame.size.height -= deltaWidth;
                 if (splitView.interfaceOrientation == UIInterfaceOrientationLandscapeRight)
                 {
                     selfFrame.origin.y += deltaWidth;
                 }
             }
         }

         [splitView.view setFrame:selfFrame];
     }completion:^(BOOL finished){
         if (finished)
         {
             delegate.masterIsHidden = !delegate.masterIsHidden;

             if (completionBlock)
             {
                 completionBlock();
             }
         }
     }];
}

/** Method is called by the Navigation controller when the ipad is rotated. Also called when we come from the BACkground incase we were in a full screen state. This is to get the master controller
  BACk into the correct state.
  @return void
 */
- (void)updateHideMasterOnRotation {
    if ([[[UIDevice currentDevice] systemVersion] floatValue] < 8.0) {
        if (self.masterIsHidden) {
            self.masterIsHidden = NO;
            [self toggleHideMaster:nil];
        }
    }
}
// I observe the rotation in my detailview's navigationcontroller like this.
// We track this on the navigation controller to globally reset the master hidden state to where it needs to be. This won't takE into account prevIoUsly passed completion blocks. If needed that can be handled in the view controller implemenTing the hideable splitview.
// Again - additional things will need to be considered if supporTing porTrait - like resetTing if we rotate to a porTrait orientation.
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
    MYAppDelegate *appDelegate = (MYAppDelegate*)[UIApplication sharedApplication].delegate;

    [appDelegate updateHideMasterOnRotation];
}

现在你有了一个模式,它将使用动画隐藏主视图,并且可以被任何视图控制器调用.此示例适用于在横向上锁定但支持横向旋转(FYI)的应用程序,您可以使用一些条件更新模式以纵向工作.这也允许对此功能采用简约方法.我之前看过MGSplitviewcontroller,虽然很棒,但我并不需要它提供的所有功能.当我不需要他们所做的大部分工作时,我也不喜欢依赖他人的依赖关系进行更新.

编辑12/10 – 为此答案添加了iOS8支持.在iOS7中,splitview框架的xy坐标被颠倒了.在iOS8中,它们就像您期望的那样.所以我们现在需要考虑到这一点.在iOS8中,框架在旋转时也保持不变,因此我们仅在iOS中的旋转时更新< 8.0. 希望这有助于某人. 快乐的编程.